These unique Jobe's® spikes are the most effective way to deliver organic fertilizer to your trees. Unlike top-dressed fertilizers, these spikes are placed in the soil, where microbes will break them down for fast absorption by feeder roots. Ideal for all types of outdoor trees, including fruit and nut trees. 5-5-5 fertilizer. 10 spikes per box. USA made. NOTE: Never apply within 30" of the trunk.